The multistep synthesis of hitherto unknown 5,6-dihalo-3-hydroxypyridines starting from commercially available 2-hydroxy-5-nitropyridine is described. The suitability of cheap 2-aminomethylfuran (furfurylamine) for the preparation of the title compounds in a novel two step process was also explored.
本文介绍了从市售的 2-hydroxy-5-nitropyridine 开始,多步骤合成迄今未知的 5,6-二卤-3-
羟基吡啶的方法。此外,还探讨了廉价的 2-
氨基甲基
呋喃(
糠胺)在新颖的两步法中制备标题化合物的适用性。